Substorm-time field perturbations in the polar magnetosphere : POLAR observations

Space Sciences Laboratory University Of California

Institute of Geophysics and Planetary Physics, University of California

Department of Earth and Planetary Phys., University of Tokyo

Laboratory for extraterrestrial Physics, NASA/Goddard Space Flight Center

Department of Physics, University of Alberta

Geophysics Program, University of Washington

Department Of Physics University Of Alberta

Geophysics Program University Of Washington

Institute Of Geophysics And Planetary Physics University Of California

Department Of Earth And Planetary Phys. University Of Tokyo

Laboratory For Extraterrestrial Physics Nasa/goddard Space Flight Center

Institute Of Geophysics And Planetary Physics Ucla